Convert ICD-10 Code J31.1 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
J31.1 Chronic nasopharyngitis		472.2 Chronic nasopharyngitis

ICD-10 to ICD-9 crosswalk for code J31.1 - chronic nasopharyngitis based on the most recent General Equivalence Mappings (GEMS) information.